CN205608394U - Drum unit and have processing box of this drum unit - Google Patents

Abstract

The utility model relates to a drum unit and have processing box of this drum unit, the drum unit is including drum unit casing, rotatably install the photosensitive piece in drum unit casing and install the controlling means on drum unit casing, and photosensitive piece includes the sensitization drum and install at vertical end in the sensitization drum and be used for the externally power supply to receive the power transfer device of drive power, and controlling means is used for controlling the combination and the separation of power transfer device and outside power supply, controlling means include the stroke mechanism of amplification and be located the stroke mechanism of amplification and power transfer device between magnetic action mechanism, pass through magnetic interaction between magnetic action mechanism and the power transfer device, power among the power transfer device is received even as an organic wholely through coupling mechanism and gear portion, therefore the possibility that the piece can not break away from the combination with gear portion is received to power.

Description

Drum unit and there is the handle box of this drum unit

Technical field

This utility model relates to electrophotographic image forming field, particularly relates to the drum being removably mounted in electrophotographic image forming Unit and there is the handle box of this drum unit.

Background technology

Electrophotographic image forming (hereinafter referred to as " equipment ") is one of equipment indispensable in modern handle official bussiness field, common Equipment includes that laser printer, laser copier etc., both are the laser beam flying sensitive piece tables utilizing and being loaded with target information Face, forms electrostatic latent image on sensitive piece surface, then with developing agent by latent electrostatic image developing, finally by the transfer device in equipment Electrostatic latent image after development is transferred to dielectric material, thus completes imaging process.

Above-mentioned developing agent is typically housed in the handle box in the equipment of being removably mounted on, and above-mentioned sensitive piece is installed in equipment Internal or be installed in handle box.

As a example by above-mentioned laser printer and sensitive piece are arranged in handle box, sensitive piece includes that surface-coated has sensitive material Photosensitive cylinder and be arranged on the power transmission of photosensitive one end of cylinder, described power transmission is in laser printer Portion receives driving force, and the driving force received is transferred to sensitive piece to drive sensitive piece rotary work.

Existing a kind of power transmission includes being fixedly mounted on the gear part of photosensitive one end of cylinder and being arranged on gear part In and swingable power reception part, one end of this power reception part is spheroid, by a pin by power reception part with Gear part combines, and the other end is from laser printer internal receipt driving force, and is transferred a driving force to gear by described pin Portion, and then drive photosensitive cylinder to rotate.Power reception part in this kind of structure is spheroid due to its one end being arranged in gear part, Thus, the rotation axis of power reception part can be relative to the free beat of the rotation axis of photosensitive cylinder, i.e. the two rotation axis is permissible Coaxial can also have certain angle of inclination.

Utility model content

This utility model provides a kind of drum unit, and an end at drum unit is provided with for the power from external reception driving force Receiving element, described power reception part is fitted without spheroid, and its rotation axis is the most coaxial with the rotation axis of photosensitive cylinder, and dynamic Power receiving element is integrally forming by bindiny mechanism with gear part, and therefore, described power reception part does not haves and departs from knot with gear part The possibility closed.

Described drum unit can be removably mounted in equipment independently, it is also possible to becomes a part for handle box along with place Reason box is removably mounted in equipment, thus, this utility model also provides for a kind of handle box, and described handle box includes above-mentioned drum Unit.

For achieving the above object, this utility model employing below scheme:

Drum unit, the sensitive piece including drum unit housing, being rotatably installed in drum unit housing and be arranged on drum unit shell Control device on body, sensitive piece includes photosensitive cylinder and is arranged on one longitudinal end of photosensitive cylinder and for from external impetus Source receives the power transmission of driving force, controls device and is used for controlling power transmission and the combination of external power supply and separating, Described control device includes stroke amplifying mechanism and the magnetic action machine between stroke amplifying mechanism and power transmission Structure, passes through magnetic interaction between described magnetic action mechanism and power transmission.

Described magnetic action mechanism includes interactive active magnetic part and passive magnetic part, and active magnetic part is arranged on stroke On enlarger, passive magnetic part is arranged on power transmission.

Described stroke amplifying mechanism includes driving lever, by lever and gear part, described gear part includes the gear wheel portion be combineding with each other And pinion part, driving lever is combined with pinion part, is combined with gear wheel portion by lever.

Further, described stroke amplifying mechanism also includes that the second elastic component, second elastic component one end abut with by lever, another End abuts with drum unit housing.

Concrete, being included the body of rod by lever and being positioned at service portion and second tooth-strip part at body of rod two ends in this utility model, main Being provided with the first tooth-strip part in lever, the first tooth-strip part engages with pinion part, and the second tooth-strip part engages with gear wheel portion；Described Service portion includes the fork being connected with the body of rod and the active magnetic part mounting groove being arranged on fork, and active magnetic part is consolidated Dingan County is contained in active magnetic part mounting groove；Described power transmission includes power reception part, bindiny mechanism, the first elastic component And gear part, power reception part is fixing with bindiny mechanism to be connected；Bindiny mechanism is combined with gear part；One end of first elastic component is supported Connection mechanism in succession, the other end abuts gear part；Gear part is fixed on a longitudinal end of photosensitive cylinder；Described passive magnetic part It is arranged in bindiny mechanism.

More specifically, power reception part includes that interconnective Part I and Part II, described bindiny mechanism include that split sets The middleware put and support member, Part I enters and is fixed on through middleware in support member, and passive magnetic part is arranged on centre On part.

The handle box that this utility model provides, single including developing cell and drum unit as above, described developing cell and drum Unit is connected with each other.

As it has been described above, power reception part is fitted without spheroid, but it is connected as a single entity with gear part by bindiny mechanism, therefore, this Power reception part in utility model does not haves and departs from, with gear part, the possibility combined.

Accompanying drawing explanation

Fig. 1 is the overall structure schematic diagram of the handle box that this utility model relates to.

Fig. 2 is the structural representation of the drum unit that this utility model relates to.

Fig. 3 A is this utility model medium power transfer device and the STRUCTURE DECOMPOSITION schematic diagram controlling device.

Fig. 3 B is the structural representation in this utility model power transmission middle gear portion.

Fig. 3 C is that this utility model controls in device by the structural representation of lever.

Fig. 3 D is the structural representation of this utility model medium-height trestle.

Fig. 4 is this utility model medium power transfer device sectional view of Section A-A along Fig. 2.

Fig. 5 A is the view that this utility model medium power receiving element stretches out timed unit and power transmission.

Fig. 5 B is this utility model medium power receiving element retraction timed unit and the view of power transmission.

Detailed description of the invention

Describing this utility model embodiment below in conjunction with the accompanying drawings in detail, wherein, drum unit can be installed the most removably In the equipment with power output member, it is also possible to the part becoming handle box has dynamic along with handle box is removably mounted on In the equipment of power output.

[drum unit and the structure of handle box]

Fig. 1 is the overall structure schematic diagram of the handle box that this utility model relates to；Fig. 2 is the drum unit that this utility model relates to Structural representation.

As depicted in figs. 1 and 2, handle box C includes interconnective developing cell 1 and drum unit 2, described developing cell 1 Including developing cell housing 10 and the development part (not shown) that is arranged in developing cell housing, described drum unit 2 includes drum Unit housings 20 and the sensitive piece 3 being rotatably installed in drum unit housing, described sensitive piece includes having rotation axis L1 Photosensitive cylinder 30 and be arranged on the vertical adterminal power transmission 4 of photosensitive cylinder one, described power transmission 4 is used In receiving driving force from external power supply；Meanwhile, the rotation more stable for ensureing sensitive piece 3, described drum unit 2 also includes peace Be contained on drum unit housing and with the support 21 of power transmission 4 homonymy, this support 21 is used for supporting sensitive piece 3.

When described drum unit 2 is installed into equipment and starts working, power transmission 4 is combined with external power supply and receives The driving force of external power supply output；When drum unit 2 is taken out from equipment by needs, described power transmission 4 must be with External power supply departs from and combines, thus, drum unit 2 described in the utility model also include for control power transmission 4 with The control device 5 that external power supply combines and departs from, described control device 5 is arranged on drum unit housing 2, this utility model In embodiment, described external power supply is the power output member in equipment.As in figure 2 it is shown, described control device 5 includes row Journey enlarger 7 and the magnetic action mechanism 6 between stroke amplifying mechanism and power transmission, described magnetic action By magnetic interaction between mechanism 6 and power transmission 4, described stroke amplifying mechanism 7 is installed in drum unit housing On 20.

[power transmission and the structure controlling device]

Fig. 3 A is this utility model medium power transfer device and the STRUCTURE DECOMPOSITION schematic diagram controlling device；Fig. 3 B is power transmission dress Put the structural representation in middle gear portion；Fig. 3 C is to control in device by the structural representation of lever；Fig. 3 D is that the structure of support is shown It is intended to；Fig. 4 is power transmission sectional view of Section A-A along Fig. 2.

As shown in Figure 3A, power transmission 4 includes power reception part 41, bindiny mechanism's the 46, first elastic component 44 and gear Portion 45；Preferably, described first elastic component 44 is the first spring, and power reception part 41 is fixing with bindiny mechanism 46 to be connected； Bindiny mechanism 46 is combined with gear part 45；One end of first spring 44 abuts bindiny mechanism, and the other end abuts gear part；Gear Portion 45 is fixed on a longitudinal end of photosensitive cylinder 30, thus, the rotation axis of gear part 45 and the rotation of photosensitive cylinder 30 Shaft axis is identical；Described power reception part 41 is for being combined and receive driving force with power output member, and described bindiny mechanism 46 uses In the driving force that power reception part 41 receives is transferred to gear part 45.

Continuing as shown in Figure 3A, described power reception part 41 has rotation axis L2, including interconnective Part I 411 With Part II 412, described Part II 412 is for being combined with power output member, and Part I 411 is column, the The first through hole 413 it is additionally provided with in a part；Described bindiny mechanism 46 includes middleware 42 and the support member 43 that split arranges, As it can be seen, middleware 42 is column, preferably cylinder, and described middleware 42 have relative upper surface 42a and Lower surface 42b, also includes through middleware 42 the second through hole 421 of intersecting with upper surface 42a and lower surface 42b；Described Support member 43 is also column, preferably cylinder, as it can be seen, support member 43 also has upper surface 43a and lower surface 43b, Also have through support member 43 third through-hole 431 that intersects with upper surface 43a and lower surface 43b, meanwhile, at support member 43 Side be additionally provided with fourth hole 432 and power transfering part 433, described fourth hole 432 is through support member 43 and with the 3rd Through hole 431 intersects, and described power transfering part 433 is radially from the outward extending protuberance of support surface along support member；Described The Part I 411 of power reception part 41 enters in third through-hole 431 through the second through hole 421, and makes the first through hole 413 Relative with fourth hole 432, by pin (not shown) through the first through hole 413 and fourth hole 432, thus realize power The connection of receiving element 41 bindiny mechanism 46.

As it has been described above, power reception part 41 is to be connected by pin with bindiny mechanism 46, therefore, those skilled in the art are easy It is contemplated that described Part I 411 is not necessarily required to through third through-hole 431, it is only necessary to ensure the first through hole 413 and Four through holes 432 relatively, thus, described third through-hole 431 can also be configured to blind hole.

As shown in Figure 3 B, gear part 45 includes body flange 450 and the gear 457 formed on body flange, described body flange 450 enclose formation has the flange chamber 451 of the opening 452 and diapire 453 being oppositely arranged, and is positioned at described opening 452 and diapire The first holding tank 456 for being combined it is formed with described power transfering part 433 on flange cavity wall between 453；For fixing institute State the first spring 44, it is contemplated that installation portion is set at least one of support member lower surface 43b and gear part diapire 453, institute Stating installation portion can be such as to accommodate the holding tank of spring or support the protuberance of spring, in this utility model embodiment, preferably Be along gear part 45 rotation axis L1 from diapire 453 to away from opening 452 direction formed extension 454, described in prolong Forming the second holding tank 455 in extending portion 454, one end of spring 44 is accommodated in the second holding tank 455.

In this utility model embodiment, the power reception part 41 in described power transmission 4 is connected as a single entity with bindiny mechanism 46, Bindiny mechanism 46 is combined with gear part 45 again, thus, the rotation axis L2 of power reception part 41 by all the time with gear part 45 Rotation axis keeps coaxial, and the rotation axis of described gear part 45 is identical with the rotation axis L1 of photosensitive cylinder 30, therefore, The rotation axis L2 of this utility model medium power receiving element 41 will keep coaxial with the rotation axis L1 of photosensitive cylinder 30 all the time.

Describe below in conjunction with Fig. 3 A, Fig. 3 C and Fig. 3 D and control magnetic action mechanism 6 and the structure of stroke amplifying mechanism 7 in device And control the relation between device 5 and power transmission 4.

As shown in figs. 3 a and 3 c, stroke amplifying mechanism 7 includes driving lever 71, by lever 72 and gear part 73, described tooth Wheel portion 73 is used for connecting driving lever 71 and by lever 72, and driving lever 71 is provided with the first tooth-strip part 711, and gear part 73 is wrapped Include the gear wheel portion 73a and pinion part 73b be combineding with each other, it is preferred that described gear wheel portion 73a and pinion part 73b mono- Body formed duplicate gear, the first tooth-strip part 711 is combined with pinion part 73b, gear wheel portion 73a be combined by lever 72；Institute State and included the body of rod 720 and the service portion 721 being positioned at body of rod two ends and the second tooth-strip part 722, described gear wheel portion by lever 72 73a and the second tooth-strip part 722 engage, and service portion 721 includes the fork 7211 being connected with the body of rod.

Magnetic action mechanism 6 includes interactive active magnetic part 61 and passive magnetic part 62, it is preferred that active magnetic Part 61 and passive magnetic part 62 are Magnet, and described active magnetic part 61 is arranged on stroke amplifying mechanism 7, passive magnetic part 62 are arranged on power transmission 4, concrete, and as shown in Figure 3 A and Figure 3 B, active magnetic part 61 is arranged on by lever Fork 7211 on, passive magnetic part 62 is arranged on the upper surface 42a of middleware 42.As shown in Figure 3 C, service portion 721 also include the active magnetic part mounting groove 7212 being arranged on fork 7211, and active magnetic part 61 is fixedly installed to institute State in active magnetic part mounting groove 7212；As shown in Figure 3 B, middleware 42 is additionally included on upper surface 42a the passive magnetic arranged Property part mounting groove 422, passive magnetic part 62 is fixedly installed in described passive magnetic part mounting groove 422.For realizing controlling dress Putting the control action of 5, the magnetic of the side that described active magnetic part 61 is adjacent with passive magnetic part 62 is identical, works as active magnetic When part 61 is relative with passive magnetic part 62, in the repulsive force effect produced therebetween to power transmission 4, work as active magnetic Property part 61 the most relative with passive magnetic part 62, i.e. the two dislocation time, active force will not be produced therebetween.

It is as noted previously, as active magnetic part 61 and has with passive magnetic part 62 relative and not relative to two states, the most described forked Body 7211 has needed to reset after exercise, and therefore, stroke amplifying mechanism 7 also includes the second elastic component 74, it is preferred that institute Stating the second elastic component 74 is the second spring, for being resetted by fork 7211, as in figure 2 it is shown, the second spring one end is with passive Bar 72 abuts, and the other end abuts with drum unit housing 20.As shown in figs. 3 a and 3 c, described also included from bar by lever 72 The bracer 723 for supporting the second spring 74 prominent on body 720, the second spring 74 is fixed on a bracer 723, tool Body, a bracer 723 is formed with protruded stigma 724, second spring 74 one end is fixed on protruded stigma 724, and the other end is single with drum Unit's housing 20 abuts.

As shown in Figure 4, after power transmission 4 assembles, described first spring 44 is accommodated in the second holding tank 455 In, and the first spring 44 abuts with the lower surface 43b of support member 43, the lower surface 42b of middleware 42 and support member 43 Upper surface 43a contacts.After power reception part 41 receives the driving force of outside, will be transferred a driving force to by described pin Support member 43, so that support member 43 rotates, now, owing to middleware 42 is not driven the effect of power, therefore, In theory, middleware 42 will keep static relative to support member 43；But, due to lower surface 42b and the support member of middleware Upper surface 43a keep contact, certain friction will be there is between support member 43 and the middleware 42 of geo-stationary in rotation Power, after frictional force reaches certain value, described middleware 42 rotates starting, thus causes active magnetic part 61 and passive magnetic Property part 62 between relative position constantly change, control device 5 will lose efficacy.

For avoiding the relative position change between active magnetic part 61 and the passive magnetic part 62 caused because middleware 42 rotates, As shown in Figure 3A, middleware 42 also includes the anti-dynamic groove 423 being disposed therein, and is also included prolonging from the body of rod 720 by lever 72 The projection 725 stretched, described projection 725 is combined with anti-dynamic groove 423；For ensureing more stable the tying with anti-dynamic groove 423 of projection 725 Close, it is preferred that described anti-dynamic groove 423 connects with the second through hole 421, to ensure that projection 725 has bigger with anti-dynamic groove 423 Contact area.

As it has been described above, active magnetic part 61 is installed in by the fork 7211 of lever, during passive magnetic part 62 is installed in Between on part 42, when active magnetic part 61 is relative with passive magnetic part 62, repulsive force will be produced therebetween, this repulsive force is not But can be applied on middleware 42, and can be applied to by lever 72 by fork 7211, therefore, by lever 72 There is the risk come off.

As shown in Figure 3 D, support 21 includes fifth hole 211 and the anticreep groove 212 passed for power reception part 41, works as drum After unit 2 or handle box C assemble, described support 21 is fixedly installed on drum unit 2, and power reception part 21 is worn Cross fifth hole 211, be housed inside in anticreep groove 212 by the body of rod 720 of lever, when by lever 72 by repulsive force, institute State support 21 to abut by lever 72, thus effectively prevent coming off by lever 72.

[extending and retracting of power reception part]

Fig. 5 A is the view that power reception part stretches out timed unit and power transmission；Fig. 5 B is power reception part Retraction timed unit and the view of power transmission.

Described power transmission 4 is installed and controls the drum unit 2 of device 5 or handle box C before load facility, power Receiving element 41 is in and stretches out state shown in Fig. 5 A, and now, the first spring 44 and the second spring 74 are in uncompressed state, Active magnetic part 61 and passive magnetic part 62 misplace, as shown in dotted line in Fig. 5 A, and active magnetic part 61 and passive magnetic part 62 Be in not relative to position, repulsive force will not be produced therebetween, the rotation axis L1 of drum gear 45 and power reception part 41 Rotation axis L2 is coaxial.

As shown in Figure 5A, when driving lever 71 is acted on by external force F, and described external force F can be from the effect of operator, Can also is that from coming that the drum unit 2 or handle box C being provided with described control device 5 is subject to during load facility From the effect of equipment inner wall.In this utility model embodiment, by described external force F from as a example by equipment inner wall, driving lever 71 is outside Move along direction shown in d1 under the effect of power F, by described first tooth-strip part 711, duplicate gear 73 and the second tooth-strip part The effect of 722, will be moved along direction shown in d2 by lever 72, described in be provided with the fork 7211 of active magnetic part 61 with And moved to the position relative with passive magnetic part 62 along direction shown in d2 by lever 72, thus at active magnetic part 61 and quilt Producing repulsive force between dynamic magnetic part 62, described repulsive force promotes middleware 42, support member 43 and drives power reception part 41 Move along the retracted orientation shown in d3；Meanwhile, the first spring 44 and the second spring 74 are respectively by support member 43 with by lever 72 Compressing deformation, as shown in Figure 5 B, repulsive force between active magnetic part 61 and passive magnetic part 62 and the first spring 44 During elastic reset dynamic balance, power reception part 41 is no longer retracted along direction shown in d3.

When precalculated position in drum unit 2 or handle box C arrival equipment, it is positioned at described drum unit 2 or handle box C table Buckle on face will enter in corresponding draw-in groove, and now, driving lever 71 disengaging contacts with equipment inner wall, the most described external force F no longer exists, and is moved along the direction in opposite direction with shown in d2 under the elastic reset power effect of the second spring 74 by lever 72, By described second tooth-strip part 7222, duplicate gear 73 and the effect of the first tooth-strip part 711, driving lever 71 will along with d1 Shown direction motion in opposite direction；While being moved by lever 72, the active magnetic part 61 being positioned on fork 7211 will Gradually misplacing with passive magnetic part 62, the repulsive force between active magnetic part 61 and passive magnetic part 62 also will fade away, in Between part 42, support member 43 and the power reception part 41 that is connected with support member 43 by the elastic reset masterpiece at the first spring 44 Instead moving in the opposite direction with shown in d3 with lower edge, power reception part 41 stretches out, and the power output member in equipment is combined, Now, each parts controlled in device 5 will be returned to the original state shown in Fig. 5 A.

The foregoing describe at drum unit 2 or handle box C during being installed into equipment, the retraction of power reception part 41 and stretching Going out process, when terminal use needs to take out drum unit 2 or handle box C from equipment, power reception part 41 will weigh again Answer above-mentioned retraction and stretch out process.

It is to say, when terminal use needs to take out drum unit 2 or handle box C, it is only necessary to by the handle box C in Fig. 1 Or the drum unit 2 in Fig. 2 lifts the top of paper in figure so that driving lever 71 touches device inwall again, i.e. actuating rod 71 are acted on by external force F again, and each parts controlling device 5 will repeat above-mentioned motor process, and power reception part 41 completes Retract action also departs from combination with power output member, and drum unit 2 or handle box C are taken out from equipment by terminal use smoothly； Subsequently, driving lever 71 no longer touches device inwall, described external force F disappears, power transmission 4 and each portion of control device 5 Part all returns to the original state shown in Fig. 5 A, and now, power reception part 41 stretches out.

[explanation of stroke amplifying mechanism]

As in figure 2 it is shown, stroke amplifying mechanism 7 is installed in drum unit 2, specifically, stroke amplifying mechanism 7 passes with power Delivery device 4 homonymy, wherein driving lever 71 is prominent from drum unit housing 20, and duplicate gear 73 is fixed on drum unit by pivot pin On housing 20, driving lever 71 and being engaged with duplicate gear 73 respectively by lever 72.As it has been described above, when driving lever 71 receives During external force F, driving lever 71 and being moved in d1 and the d2 direction along Fig. 5 A respectively by lever 72, do not using duplicate gear 73, when the most described first tooth-strip part 711 is engaged by single gear with the second tooth-strip part 722, driving lever 71 is along side shown in d1 To stroke by equal along the stroke in direction shown in d2 with by lever 72；But, it is limited in drum unit 2 or handle box C Structure and drum unit 2 and equipment inner wall between spacing, driving lever 71 is allowed to the stroke t1 moved along direction shown in d1 Less than active magnetic part 61 from the two relative required stroke t2 that misplaces with passive magnetic part 62, therefore, at driving lever 71 On the premise of there is less stroke, in order to ensure that active magnetic part 61 has enough strokes, this utility model embodiment uses institute State duplicate gear 73, and driving lever 71 engages with pinion part 73b of duplicate gear, by the canine tooth of lever 72 with duplicate gear Wheel portion 73a engages.

The number of described duplicate gear 73 is not limited to one, or stroke t2 less at described stroke t1 requires bigger feelings Under condition, it is also possible to use multiple duplicate gear to carry out Multi-stage transmission, to ensure that active magnetic part 61 has enough strokes；Certainly, The form of the composition of described gear wheel portion 73a and pinion part 73b is also not limited to the two one, when drum unit 2 is at longitudinal direction Insufficient space with place duplicate gear time, it is also contemplated that gear wheel portion 73a and pinion part 73b are arranged to separate form, Now, driving lever 71 engages with pinion part 73b, is engaged with gear wheel portion 73a by lever 72, and gear wheel portion 73a is with little Gear part 73b engages.

As it has been described above, active magnetic part 61 and passive magnetic part 62 in this utility model are to interact in the way of repulsive force, Before drum unit 2 or handle box C load facility, power reception part 41 is in the state of stretching out；At drum unit 2 or handle box During C load facility, active magnetic part 61 is relative with passive magnetic part 62, produces therebetween repulsive force, and power connects Addressee 41 is promoted to the direction of gear part 45 by this repulsive force and retracts；It is entirely enclosed in equipment at drum unit 2 or handle box C After, active magnetic part 61 misplaces with passive magnetic part 62, and repulsive force therebetween disappears, and power reception part 41 is installed in The first spring 44 in gear part 45 is released.It will be apparent that between described active magnetic part 61 and passive magnetic part 62 also Can by be with captivation in the way of interact, before drum unit 2 or handle box C load facility, power reception part 41 is also located In the state of stretching out；During drum unit 2 or handle box C load facility, active magnetic part 61 and passive magnetic part 62 Relatively, producing therebetween captivation, power reception part 41 is sucked to the direction of gear part 45 by this captivation and retracts；? After drum unit 2 or handle box C are entirely enclosed in equipment, active magnetic part 61 misplaces, therebetween with passive magnetic part 62 Captivation disappears, and the first spring 44 that power reception part 41 is installed in gear part 45 is released.

It is fitted without spheroid on power reception part 41 in this utility model, but is linked as with gear part 45 by bindiny mechanism 46 Integrally, and the most at any time, the rotation axis L2 of power reception part 41 all the time with the rotation axis L1 of photosensitive cylinder 30 Coaxial, also would not there is power reception part 41 and depart from, with gear part 45, the possibility combined.

Claims (10)

1. drum unit, the sensitive piece including drum unit housing, being rotatably installed in drum unit housing and be arranged on drum unit housing On control device, sensitive piece includes photosensitive cylinder and is arranged on one longitudinal end of photosensitive cylinder and for from external power supply Receive the power transmission of driving force, control device and be used for controlling power transmission and the combination of external power supply and separating, It is characterized in that, described control device includes stroke amplifying mechanism and between stroke amplifying mechanism and power transmission Magnetic action mechanism, passes through magnetic interaction between described magnetic action mechanism and power transmission.

Drum unit the most according to claim 1, it is characterised in that described magnetic action mechanism includes interactive active magnetic Property part and passive magnetic part, active magnetic part is arranged on stroke amplifying mechanism, and passive magnetic part is arranged on power transmission.

Drum unit the most according to claim 2, it is characterised in that described stroke amplifying mechanism includes driving lever, by lever and tooth Wheel portion, described gear part includes gear wheel portion and the pinion part be combineding with each other, and driving lever is combined with pinion part, by lever with Gear wheel portion combines.

Drum unit the most according to claim 3, it is characterised in that described stroke amplifying mechanism also includes the second elastic component, second Elastic component one end abuts with by lever, and the other end abuts with drum unit housing.

Drum unit the most according to claim 4, it is characterised in that described included the body of rod by lever and be positioned at the work at body of rod two ends With portion and the second tooth-strip part, driving lever being provided with the first tooth-strip part, the first tooth-strip part engages with pinion part, the second tooth-strip part Engage with gear wheel portion.

Drum unit the most according to claim 5, it is characterised in that described service portion includes the fork being connected with the body of rod and sets Putting the active magnetic part mounting groove on fork, active magnetic part is fixedly installed in active magnetic part mounting groove.

Drum unit the most according to claim 6, it is characterised in that described power transmission includes power reception part, connection machine Structure, the first elastic component and gear part, power reception part is fixing with bindiny mechanism to be connected；Bindiny mechanism is combined with gear part；First One end of elastic component abuts bindiny mechanism, and the other end abuts gear part；Gear part is fixed on a longitudinal end of photosensitive cylinder.

Drum unit the most according to claim 7, it is characterised in that described passive magnetic part is arranged in bindiny mechanism.

Drum unit the most according to claim 8, it is characterised in that power reception part includes interconnective Part I and second Part, described bindiny mechanism includes middleware and the support member that split arranges, and Part I enters through middleware and is fixed on and props up In support member, passive magnetic part is arranged on middleware.

10. handle box, it is characterised in that include developing cell and according to described in any one claim in claim 1-9 Drum unit, described developing cell and drum unit are connected with each other.